877
FNCA52 TJSJ 271930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST TUE OCT 27 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-280800-
SOUTHEAST COASTAL PLAINS-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 40 10 20
TEMP (24H TREND) 74 (-3) 90 (+1) 73 91
RH % (24H TREND) 92 (0) 56 (-6) 88 48
WIND 20FT/EARLY(MPH) E 9 E 11 E 11 E 12
WIND 20FT/LATE(MPH) E 8 SE 12 NE 8 SE 12
MIXING HGT(FT-AGL/MSL) 4590 4780
TRANSPORT WND (MPH) E 13 SE 12
VENT RATE (KT-FT) 50490 47800
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-280800-
SOUTHERN HILLS-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 40 0 20
TEMP (24H TREND) 71 (-3) 88 (+3) 70 89
RH % (24H TREND) 99 (+4) 62 (-10) 97 58
WIND 20FT/EARLY(MPH) SE 9 E 9 E 8 E 10
WIND 20FT/LATE(MPH) E 8 SE 11 E 8 SE 10
MIXING HGT(FT-AGL/MSL) 5150 5250
TRANSPORT WND (MPH) SE 12 SE 10
VENT RATE (KT-FT) 51500 47250
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-280800-
NORTH COASTAL PLAINS-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 10 20
TEMP (24H TREND) 73 (-4) 91 (0) 73 91
RH % (24H TREND) 98 (+4) 60 (-5) 96 56
WIND 20FT/EARLY(MPH) SE 9 SE 12 SE 10 SE 11
WIND 20FT/LATE(MPH) SE 8 E 17 SE 8 E 13
MIXING HGT(FT-AGL/MSL) 4980 5130
TRANSPORT WND (MPH) E 10 E 9
VENT RATE (KT-FT) 44820 41040
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-280800-
NORTHERN HILLS-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS TSTMS NONE SHOWERS
CHANCE PRECIP (%) 30 50 0 30
TEMP (24H TREND) 71 (-3) 89 (0) 70 90
RH % (24H TREND) 99 (+2) 61 (-4) 96 57
WIND 20FT/EARLY(MPH) SE 8 SE 10 SE 9 SE 9
WIND 20FT/LATE(MPH) SE 5 E 13 SE 5 E 11
MIXING HGT(FT-AGL/MSL) 5110 5330
TRANSPORT WND (MPH) SE 8 E 7
VENT RATE (KT-FT) 35770 31980
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-280800-
WEST COAST-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 40 10 40
TEMP (24H TREND) 73 (-2) 92 (+1) 72 92
RH % (24H TREND) 98 (+2) 63 (-6) 97 59
WIND 20FT/EARLY(MPH) SE 14 E 12 E 10 E 11
WIND 20FT/LATE(MPH) E 11 E 13 E 9 SE 12
MIXING HGT(FT-AGL/MSL) 4260 4470
TRANSPORT WND (MPH) SE 12 SE 10
VENT RATE (KT-FT) 42600 40230
DISPERSION 5 5
DSI 5 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-280800-
EASTERN INTERIOR-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 10 20
TEMP (24H TREND) 72 (-3) 89 (+1) 71 90
RH % (24H TREND) 98 (+3) 59 (-8) 97 57
WIND 20FT/EARLY(MPH) SE 10 SE 10 SE 10 SE 11
WIND 20FT/LATE(MPH) SE 10 SE 12 SE 9 SE 11
MIXING HGT(FT-AGL/MSL) 5970 6010
TRANSPORT WND (MPH) SE 10 SE 9
VENT RATE (KT-FT) 53730 48080
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-280800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 10 30
TEMP (24H TREND) 70 (-4) 86 (+3) 70 87
RH % (24H TREND) 100 (+2) 63 (-9) 99 61
WIND 20FT/EARLY(MPH) SE 8 SE 9 SE 8 SE 10
WIND 20FT/LATE(MPH) SE 8 SE 11 SE 6 SE 10
MIXING HGT(FT-AGL/MSL) 3940 4410
TRANSPORT WND (MPH) SE 13 SE 10
VENT RATE (KT-FT) 43340 39690
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-280800-
CENTRAL MOUNTAIN RANGE-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLEAR CLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS NONE TSTMS
CHANCE PRECIP (%) 40 50 0 50
TEMP (24H TREND) 68 (-4) 87 (+4) 68 87
RH % (24H TREND) 100 (+3) 63 (-11) 97 59
WIND 20FT/EARLY(MPH) SE 11 SE 6 SE 5 SE 6
WIND 20FT/LATE(MPH) SE 6 SE 8 SE 5 SE 8
MIXING HGT(FT-AGL/MSL) 5370 5740
TRANSPORT WND (MPH) SE 9 SE 8
VENT RATE (KT-FT) 42960 40180
DISPERSION 5 5
DSI 2 6 1 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-280800-
CAYEY MOUNTAIN RANGE-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 40 10 30
TEMP (24H TREND) 71 (-2) 85 (+2) 70 85
RH % (24H TREND) 100 (+2) 64 (-9) 100 61
WIND 20FT/EARLY(MPH) SE 6 SE 8 E 6 E 9
WIND 20FT/LATE(MPH) SE 6 SE 9 E 6 SE 9
MIXING HGT(FT-AGL/MSL) 5020 5090
TRANSPORT WND (MPH) SE 12 SE 10
VENT RATE (KT-FT) 50200 45810
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-280800-
VIEQUES-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 10 20
TEMP (24H TREND) 77 (-2) 90 (+1) 77 90
RH % (24H TREND) 89 (+1) 59 (-6) 87 58
WIND 20FT/EARLY(MPH) SE 11 E 12 E 11 E 11
WIND 20FT/LATE(MPH) SE 11 E 11 E 11 SE 11
MIXING HGT(FT-AGL/MSL) 3030 3380
TRANSPORT WND (MPH) E 13 E 12
VENT RATE (KT-FT) 33330 33800
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-280800-
CULEBRA-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 10 10
TEMP (24H TREND) 78 (-3) 91 (+1) 78 91
RH % (24H TREND) 90 (+4) 58 (-9) 88 57
WIND 20FT/EARLY(MPH) SE 11 E 11 E 12 SE 12
WIND 20FT/LATE(MPH) SE 12 E 11 E 10 SE 12
MIXING HGT(FT-AGL/MSL) 3140 3390
TRANSPORT WND (MPH) E 16 SE 13
VENT RATE (KT-FT) 43960 37290
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-280800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 30 10 10
TEMP (24H TREND) 75 (-2) 92 (+2) 74 91
RH % (24H TREND) 97 (+3) 53 (-7) 92 51
WIND 20FT/EARLY(MPH) E 13 E 16 E 13 E 14
WIND 20FT/LATE(MPH) E 14 SE 17 E 13 SE 17
MIXING HGT(FT-AGL/MSL) 4610 4390
TRANSPORT WND (MPH) SE 15 SE 15
VENT RATE (KT-FT) 59930 57070
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-280800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 30 0 10
TEMP (24H TREND) 76 (-4) 88 (+1) 76 88
RH % (24H TREND) 91 (+4) 63 (-8) 89 62
WIND 20FT/EARLY(MPH) SE 12 E 12 E 12 SE 12
WIND 20FT/LATE(MPH) SE 12 E 12 E 11 SE 12
MIXING HGT(FT-AGL/MSL) 3250 3560
TRANSPORT WND (MPH) E 14 SE 13
VENT RATE (KT-FT) 39000 39160
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-280800-
ST CROIX-
330 PM AST TUE OCT 27 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 10 10
TEMP (24H TREND) 77 (-3) 89 (0) 77 89
RH % (24H TREND) 93 (+3) 64 (-7) 92 63
WIND 20FT/EARLY(MPH) SE 10 E 11 E 11 E 12
WIND 20FT/LATE(MPH) E 11 E 11 E 10 E 12
MIXING HGT(FT-AGL/MSL) 4560 5100
TRANSPORT WND (MPH) E 15 E 13
VENT RATE (KT-FT) 59280 56100
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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